Engine Code P1594
this is my first post, however I have been lurking for quite a while. I got this code a couple of weeks ago (P1594 Charging System Voltage Too High Battery voltage sense input above target charging voltage during engine operation) and have yet to find a solution to it. The battery is seemingly getting way overchaged enough that it is leaking through the top caps, however I didn't see any overhcarge when I tested with a voltmeter.
I have had the battery and alternator tested and both were fine, my next guess is going to be the battery temperature sensor and lastly the PCM.
Has anyone had any kind of experience like this?
Its driving me crazy.
The truck is a 2000 R/T